Research in the early 1990s suggested that little or no sex education was taking place in nearly half of the schools in Britain because ………7/12Research in the early 1990s suggested that little or no sex education was taking place in nearly half of the schools in Britain because ……it was not really an important subjectpeople didn’t have a positive or open attitude to sexteachers simply felt too embarrassed to tackle the subjectit was harmful to students’ moralityGiải thíchChọn đáp án C